Source code for swh.lister.launchpad.lister

# Copyright (C) 2020-2023  The Software Heritage developers
# See the AUTHORS file at the top-level directory of this distribution
# License: GNU General Public License version 3, or any later version
# See top-level LICENSE file for more information

from dataclasses import dataclass
from datetime import datetime
import logging
from typing import Any, Dict, Iterator, Optional, Tuple

import iso8601
from launchpadlib.launchpad import Launchpad
from lazr.restfulclient.errors import RestfulError
from lazr.restfulclient.resource import Collection
from tenacity.before_sleep import before_sleep_log

from swh.core.retry import http_retry, retry_if_exception
from swh.scheduler.interface import SchedulerInterface
from swh.scheduler.model import ListedOrigin

from ..pattern import CredentialsType, Lister

logger = logging.getLogger(__name__)

VcsType = str
LaunchpadPageType = Tuple[VcsType, Collection]

SUPPORTED_VCS_TYPES = ("git", "bzr")

[docs] @dataclass class LaunchpadListerState: """State of Launchpad lister""" git_date_last_modified: Optional[datetime] = None """modification date of last updated git repository since last listing""" bzr_date_last_modified: Optional[datetime] = None """modification date of last updated bzr repository since last listing"""
[docs] def origin(vcs_type: str, repo: Any) -> str: """Determine the origin url out of a repository with a given vcs_type""" return repo.git_https_url if vcs_type == "git" else repo.web_link
[docs] def retry_if_restful_error(retry_state): return retry_if_exception(retry_state, lambda e: isinstance(e, RestfulError))
[docs] class LaunchpadLister(Lister[LaunchpadListerState, LaunchpadPageType]): """ List repositories from Launchpad (git or bzr). Args: scheduler: instance of SchedulerInterface incremental: defines if incremental listing should be used, in that case only modified or new repositories since last incremental listing operation will be returned """ LAUNCHPAD_URL = "" LISTER_NAME = "launchpad" def __init__( self, scheduler: SchedulerInterface, url: str = LAUNCHPAD_URL, instance: str = LISTER_NAME, incremental: bool = False, credentials: CredentialsType = None, max_origins_per_page: Optional[int] = None, max_pages: Optional[int] = None, enable_origins: bool = True, ): super().__init__( scheduler=scheduler, url=url, instance=instance, credentials=credentials, max_origins_per_page=max_origins_per_page, max_pages=max_pages, enable_origins=enable_origins, ) self.incremental = incremental self.date_last_modified: Dict[str, Optional[datetime]] = { "git": None, "bzr": None, }
[docs] def state_from_dict(self, d: Dict[str, Any]) -> LaunchpadListerState: for vcs_type in SUPPORTED_VCS_TYPES: key = f"{vcs_type}_date_last_modified" date_last_modified = d.get(key) if date_last_modified is not None: d[key] = iso8601.parse_date(date_last_modified) return LaunchpadListerState(**d)
[docs] def state_to_dict(self, state: LaunchpadListerState) -> Dict[str, Any]: d: Dict[str, Optional[str]] = {} for vcs_type in SUPPORTED_VCS_TYPES: attribute_name = f"{vcs_type}_date_last_modified" d[attribute_name] = None if hasattr(state, attribute_name): date_last_modified = getattr(state, attribute_name) if date_last_modified is not None: d[attribute_name] = date_last_modified.isoformat() return d
@http_retry( retry=retry_if_restful_error, before_sleep=before_sleep_log(logger, logging.WARNING), ) def _page_request( self, launchpad, vcs_type: str, date_last_modified: Optional[datetime] ) -> Optional[Collection]: """Querying the page of results for a given vcs_type since the date_last_modified. If some issues occurs, this will deal with the retrying policy. """ get_vcs_fns = { "git": launchpad.git_repositories.getRepositories, "bzr": launchpad.branches.getBranches, } return get_vcs_fns[vcs_type]( order_by="most neglected first", modified_since_date=date_last_modified, )
[docs] def get_pages(self) -> Iterator[LaunchpadPageType]: """ Yields an iterator on all git/bzr repositories hosted on Launchpad sorted by last modification date in ascending order. """ launchpad = Launchpad.login_anonymously( "softwareheritage", "production", version="devel" ) if self.incremental: self.date_last_modified = { "git": self.state.git_date_last_modified, "bzr": self.state.bzr_date_last_modified, } for vcs_type in SUPPORTED_VCS_TYPES: try: result = self._page_request( launchpad, vcs_type, self.date_last_modified[vcs_type] ) except RestfulError as e: logger.warning("Listing %s origins raised %s", vcs_type, e) result = None if not result: continue yield vcs_type, result
[docs] def get_origins_from_page(self, page: LaunchpadPageType) -> Iterator[ListedOrigin]: """ Iterate on all git repositories and yield ListedOrigin instances. """ assert is not None vcs_type, repos = page try: for repo in repos: origin_url = origin(vcs_type, repo) # filter out origins with invalid URL if not origin_url.startswith("https://"): continue last_update = repo.date_last_modified self.date_last_modified[vcs_type] = last_update logger.debug( "Found origin %s with type %s last updated on %s", origin_url, vcs_type, last_update, ) yield ListedOrigin(, visit_type=vcs_type, url=origin_url, last_update=last_update, ) except RestfulError as e: logger.warning("Listing %s origins raised %s", vcs_type, e)
[docs] def finalize(self) -> None: git_date_last_modified = self.date_last_modified["git"] bzr_date_last_modified = self.date_last_modified["bzr"] if git_date_last_modified is None and bzr_date_last_modified is None: return if self.incremental and ( self.state.git_date_last_modified is None or ( git_date_last_modified is not None and git_date_last_modified > self.state.git_date_last_modified ) ): self.state.git_date_last_modified = git_date_last_modified if self.incremental and ( self.state.bzr_date_last_modified is None or ( bzr_date_last_modified is not None and bzr_date_last_modified > self.state.bzr_date_last_modified ) ): self.state.bzr_date_last_modified = self.date_last_modified["bzr"] self.updated = True